My workaround to finish installing 14.04 Tahr, with (System Settings... -> Details ) showing I was still on 13.10 and 'update-manager -d' saying there was nothing to upgrade as I described above, was to use the distribution upgrade for servers:
For me personally the issue with `sudo update-manager -d` being unable to finish was a paper scratch , a surprise as I expected both a rerun or a restart to continue where it left off. Most human clients if they get caught in this rare net drop situation would get seriously stuck and the work around of switching to do-release-upgrade is not intuitively obvious .
[More complete version of comment #2 above]
My workaround to finish installing 14.04 Tahr, with (System Settings... -> Details ) showing I was still on 13.10 and 'update-manager -d' saying there was nothing to upgrade as I described above, was to use the distribution upgrade for servers:
`sudo do-release-upgrade -d`
That took me successfully to 14.04
https:/ /help.ubuntu. com/12. 04/serverguide/ installing- upgrading. html
For me personally the issue with `sudo update-manager -d` being unable to finish was a paper scratch , a surprise as I expected both a rerun or a restart to continue where it left off. Most human clients if they get caught in this rare net drop situation would get seriously stuck and the work around of switching to do-release-upgrade is not intuitively obvious .